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12 February 2013 abnormal situation at Chernobyl NPP

Partial damage of wall panels and fragments of light roofing over Turbine hall of Chernobyl NPP Unit 4 near Shelter occurred at 2:03 p.m. on 12 February 2013.

Damage area is approximately 600 m2.  The light roofing works were carried out in post accident period (after construction of Shelter) and do not constitute a part of Shelter constructions.

 

Location of damage in turbine hall of Chernobyl NPP unit 4

 

No violation of conditions and limits of safe operation in accordance with Technological regulations 1Р-ОУ was revealed. According to the radiation monitoring data there are no changes in radiation situation at the industrial site of Chernobyl NPP and the Exclusion Zone. Current radiation situation is 14-20 mR/hour. There were no injuries.

At the request of the State Nuclear Regulatory Inspectorate of Ukraine (SNRIU) measurements of air aerosol activity were carried out near the damaged wall – no changes detected.

 

Damaged wall of Turbine hall of Chernobyl NPP Unit 4  - view from

waterside pump station 

 

Damaged roof of Turbine hall of Chernobyl NPP Unit 4 

 

SNRIU issued an instruction to SSEChernobyl NPPto carry out in accordance with «Provisions on investigation procedures and recording of violations and deviations in Chernobyl NPP operation» an investigation of abnormal situation that occurred on 12 February 2013 in Turbine hall of Unit 4. Also, at the request of SNRIU, resident SNRIU representative at ChNPP will be included in special investigation commission.